Stylus pen



FIG. 1 is a perspective view of a stylus pen showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof where the right side view is a mirror image;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a reference view thereof showing the state that the subject design is attached to the case.

The broken lines in FIG. 7 show environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for a stylus pen, as shown and described. 